Spray cabinet



May 11 .1926.

- R. G. BARTLING SPRAY CABINET Filed Nov. 24, 1922 2 Sh eets-Sheet 1 273196726071 fizdani GT Bclrila'zgz R. G. BARTLING srau CABINET May 11 1926. 1,583,911

Filed 'Nov. 24, 19 22 2 Sheets-Sheet 2 Patented May 11, 1926.

U NIT ST A T ES E-N T OFF v HOWARD G. BARTLING, OF CHICAGO, ILLINOIS,- ASSIGNOR TO PEERLESSPNEUMATIC SYSTEMS, I1\TC., OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

SPRAY CABINET.

Application filed November 24, -192'2.- Serial No. 603,056.

This invention relates to'improvements in spray cabinets.

The object of my invention 1s to provide a spraying cabinet of new and improved construction, in which the air is exhausted by a fan, the power source of such fan being out of the current of the exhaust, so as to be free from exposure to the spray fumes or ingredients.

Another object is the provision of anew and improved exhaust mechanism, includlng the exhaust duct, which may be readily attached to existing spray cabinets.

Another object is to provide a cabinet in which spraying may be carried on and in which the exhaust movements of air andthe fumes willbe more evenly distributed throughout the cabinet than is the case in present day structures.

'These and other objects of the invention will be more fully set forth and described in the following specification and shown in the accompanying drawing, in which Figure 1 is a side elevation of a spray cabinet showing my exhauster mechanism attached thereto;

Fig. 2 is a vertical section, taken on the line 22 of Fig. 1;

Fig. 3 is a horizontal section, taken on the line 33 of Fig. 1;

Fig. 4 is a front elevation of a modified form of cabinet; and

Fig. 5 is a side elevation of the same, a portion of the cabinet being broken away.

Like numerals refer to like elements throughout the drawings, in which, in Figs. 1 to 3- 10 designates a cabinet having an open front, curved side walls 10, and a rear exhaust chamber 10. The exhaust chamber is provided with an exhaust port 11, from which leads an exhaust duct 12. Mounted in the exhaust port is the exh-auster fan 13, mounted upon a rotatable shaft 14 which is journalled at one end in a cross strap 15, the duct being bolted, or otherwise secured to the exhaust chamber. The shaft 14 is a part of and actuated by a motor 16,- which is suitably mounted upon a supporting table or pedestal 17, the duct 12 being bifurcated to form the portions 12 and 12 rearwardly of the plate 15, thus providing a location for the motor 16 out of the exhauster duct and free from contact with the spray fumes, thus eliminating fire risk and coating of the tothe shaft forquick and easy attachment and detachment.

The branches 12 and 12 of the exhaust duct are constructed of a cross sectional area -totaling an area greater than that of the exhaust port 11. V a

By this construction I find that the exhaust of the fan element is more efficient and greater than where a single exhaust duct is employed. It is'to be noted-that the partition 15 converges to anedge adjacent the top and bottom thereof; to present as little impedance to the flow of exhaust air as possible. It is also to be-noted that by this construction the exhaust duct 12, which is shown as bolted or riveted to an angle flange 12", can be readily attached to existing spray cabinets.

In Figs. 4 and 5 I have illustrated a modified form of spray cabinet, especially adapted for use in spraying small objects. In this construction the spray cabinet is designated by numeral 20, and is provided with an exhaust chamber 20 at the rear, in which is provided the exhaust port 20 around which is attached the exhaust duct 12, similar, for example, to that shown in Figs. 1 to 3, the fan being designated by numeral 13.

Located at the front of the exhaust chamber 20 is the equalizing plate 21, slightly concaved at the sides, as indicated by numeral 21? and at the top and bottom by numeral 21 Offset clamps 22 are pivoted to the rear of the spray cabinet, being prefer' ably clamped with just enough friction to permit their pivotal movement into and out of engagement with the plate 21 to retain. it against accidental fall or displacement. At the top and bottom the plate 21 pro jects beyond the sides of the exhaust chamber 20, as indicated by numeral 21; The plate is provided with a plurality of apertures 21, which may be located as desired to equalize the draft created by the fan 13. lVhere the exhaust port 20 is located at the center of the chamber 20, it is generally advisable to increase the number or size of these apertures 21 at the top and bottom of the plate, while, as will be obvious to those skilled in the art, when the port is located at the tbp or bottom of the exhaust chamber the apertures may increase in size or number from adjacent the exhaust port to the opposite end of the plate, the construction in either event serving to equalize the draft in all portions of the exhaust chamber and at the rear of the spraying chamber. Exhaust will also occur at the sides, top, and bottom of the plate 21, due to the concave construction thereof.

Removably located in the spray cabinet 10 is the shelf 25, which may be inserted when small objects are to be sprayed, serving not only to support such objects conveniently for the operator, but also to cut off the exhaust draft from the lower part of the cabinet, and also serving to segregate the draft of the lower part of the cabinet, thus preventing unnecessary circulation of the spray fumes and mist.

When it is desired to clean the equalizing plate 21, the same may be readily removed by pivoting the clips 22 out of engaging position, their frictional contact serving to retain them in either engaging or disengaging position.

It is believed that the operation and use of my improved cabinet will be so clear from the above description as to render further explanation unnecesssary.

It will be obvious that my invention is susceptible of change and modification; and I do not therefore wish to be restricted to the form shown and described, except as defined in the appended claims.

I claim I 1. The combination of a spraying cabinet having an exhaust port, a duct leading therefrom and being bifurcated to form branches, an exhauster located in said port, and a motor located between said branches and exteriorly of said duct, said motor being provided with a shaft extending into said duct and carrying said fan.

2. In exhaust mechanism for spraying cabinets, a duct attachable to such cabinets,

said duct being bifurcated, a fan located in i said duct, and a motor located between the bifurcated portions of said duct and provided with a shaft extending into said duct and carrying said fan.

In testimony whereof, I have subscribed my name.

HOWARD G. BARTLING. 

